This is the video that shows you how to upload pdfs then link to them in any of your website’s pages or products.
Go to your website in admin mode
Navigate to settings / files
Upload the file and copy the link

Edit your page or product or collection
Highlight the text you want to link from
Click on the little link button in the menu bar

Paste in the link you’ve copied, making sure it starts with http:// (not just www)
Save
Test it in your website.
You've got that sinking feeling. Someone had placed an order on your Shopify store for $500, and somehow the total had come down to $10. Your first thought: you've been hacked.
You haven't. What actually happened is simpler, and luckily easier to fix. You had a discount code sitting in your Shopify account called "FREE", or something equally easy to guess. Someone at checkout has just ... typed it in. And it worked.
Here's what it means and what to do.
This is a stellar example of what happens when you consistently show up and put your genuine self into your content.
Writers and journalists are always looking for authentic voices, and if you're publishing regularly, you're infinitely easier to find. Read how Chris did it.